1212450330 has 64 divisors (see below), whose sum is σ = 3581399808. Its totient is φ = 255813120.

The previous prime is 1212450311. The next prime is 1212450361. The reversal of 1212450330 is 330542121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1212450297 and 1212450306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219331 + ... + 224790.

It is an arithmetic number, because the mean of its divisors is an integer number (55959372).

Almost surely, 2^1212450330 is an apocalyptic number.

1212450330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212450330 is an abundant number, since it is smaller than the sum of its proper divisors (2368949478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212450330 is a wasteful number, since it uses less digits than its factorization.

1212450330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444151.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1212450330 is about 34820.2574660211. The cubic root of 1212450330 is about 1066.3210567596.

Adding to 1212450330 its reverse (330542121), we get a palindrome (1542992451).

The spelling of 1212450330 in words is "one billion, two hundred twelve million, four hundred fifty thousand, three hundred thirty".